Effects of Biorational Pesticides on Four Coccinellid Species (Coleoptera: Coccinellidae) having Potential as Biological Control Agents in Interiorscapes
Authors: Smith, S. F.; Krischik, V. A.
Source: Journal of Economic Entomology, Volume 93, Number 3, June 2000 , pp. 732-736(5)
Publisher: Entomological Society of America
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Abstract:
The direct toxicity of insecticidal soap, horticultural oil, Azatin, an extract from the Neem tree containing azadiractin, and BotainiGard, a commercial formulation of the entomopathogenic fungus Beauveria bassiana, was assessed on adults of four species of coccinellids—Hippodamia convergens (Guérin-Ménéville), Coleomegilla maculata (DeGeer), Harmonia axyridis Pallas, and Cryptolaemus montrouzieri Mulsant. All biorationals caused less mortality than a conventional pesticide, carbaryl (Sevin). Horticultural oil (Sunspray ultrafine oil) consistently had no effect on beetle survivorship. Insecticidal soap (M-Pede) significantly reduced survival in all replicates for C. maculata and in at least one of the three replicates for the other three coccinellid species. Beauveria bassiana (BotaniGard) significantly reduced survival of C. montrouzieri at 72 h after spray in all three replicates. Azatin reduced survivorship in only one species, C. maculata, in only one of the three replicates.Keywords: Coccinellidae; interiorscape pest management; biorational pesticides; biological control; nontarget effects
Document Type: Research article
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